Structural and electrical properties of Mg_2TiO_4

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概要

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• We have studied the structural and electrical properties of Mg2TiO4 inverse spinel using X-ray diffraction, Raman spectroscopy, ac conductivity and dielectric spectroscopy. Polycrystalline sample of Mg2TiO4 was prepared by the conventional solid state reaction technique. Powder X-ray diffraction analysis indicates single phase nature of inverse spinel Mg2TiO4. Raman study also infers that Mg2TiO4 exhibits inverse spinel structure. The dielectric constant measured as a function of frequency exhibits a resonance peak at 9 MHz. The dielectric constant measured as function of temperature (100-300 K) at 500 kHz is found to increase with temperature. The value of the loss tangent (tanδ) was found to be small ∼ 0.01 through out the whole temperature range. The value of the exponent (s), evaluated using the power law σAC = ωS, is found to be ∼1, which indicates the good correlation of the hoping of carriers in the system.

• 公益社団法人 日本セラミックス協会の論文
• 2009-05-01

著者

• Kim Dong

  School Of Electrical And Electronic Engineering Chung-ang Univ.

• Lee Chan

  School Of Nano & Advanced Materials Engineering Changwon National University

• KUMAR Shalendra

  School of Nano & Advanced Materials Engineering, Changwon National University

• CHOI H.

  School of Electrical Engineering and Computer Science, Kyungpook National University

• KUMAR Ravi

  Materials Science Division, Inter-University Accelerator Centre

• KOO B.

  School of Nano and Advanced Materials Engineering, Changwon National University

• KUMAR Ravi

  Inter-University Accelerator Centre

• Kim Dong

  School Of Electrical And Electronic Engineering At Yonsei University

• Lee Chan

  School Of Chemical Engineering Chungnam National University

• Kumar Shalendra

  School Of Nano & Advanced Materials Engineering Changwon National University

• Koo B.

  School Of Nano & Advanced Materials Engineering Changwon National University

• Choi H.

  School Of Electrical Engineering And Computer Science Kyungpook National University

• Kim Dong

  School Of Nano And Advanced Materials Engineering Changwon National University

• Kim Dong

  School of Clinical Sciences, University of Bristol

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